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i find youtube '480p' much higher quality than twitch's too
by abledon 4y ago
i find youtube '480p' much higher quality than twitch's too
- belthesar 4y agoThis likely has everything to do with YouTube using VP9 vs. Twitch using h.264. Twitch has flirted with using other codecs like VP9, h.265, etc, especially in markets where consumption is incredibly Android mobile-centric, but ultimately I think they're making their big bet on an AV1 implementation for the next codec choice.
- fomine3 4y agoOP says Twitch uses AWS IVS. And IVS says: > Codecs: Amazon IVS supports H.264 for video and AAC (LC) for audio.
- giantrobot 4y ago> This likely has everything to do with YouTube using VP9 vs. Twitch using h.264. There's nothing inherent about VP9 over h.264 that will make it look better. Especially when delivering a downscaled stream (480p when the source is 1080p or 4K) the pre-encode processing (scaling, filtering, etc) is going to matter more than the codec in most cases. Just in downscaling video, a Lanczos filter vs bicubic makes a lot of difference even using the same codec, profile, and bitrate.
- trinovantes 4y agoI suspect it may have more to do with YouTube having higher bitrates. Video games during interesting moments (e.g. Vampire Survivors) don't compress well regardless of your codec choice. https://support.google.com/youtube/answer/2853702?hl=en#zippy=%2Cp-fps%2Cp https://support.google.com/youtube/answer/2853702?hl=en#zipp... (1080p60 goes up to 9k) https://stream.twitch.tv/encoding/ https://stream.twitch.tv/encoding/ (1080p60 goes up to 6k)
- yobbo 4y agoYoutube has higher quality and lower bit rates than Twitch. Maybe due to saving computing-resources used for transcoding?